How to/where to rate/vote for episodes (star rating)?

Heya Greg. I have begun listening to you again with no regrets. Your interviewing skills and level of communication is a sharp as I remember. 

You mentioned rating or voting with star ratings and I am not sure where I go to do this? 

Is this forum the most popular place to communicate with others? I noticed there is a telegram channel I'm yet to check out. How busy is that?

Cheers Steve O